diff options
Diffstat (limited to 'llvm/lib/Transforms/Scalar/IndVarSimplify.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/IndVarSimplify.cpp | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp index e2c2ff2e230..372ea61c159 100644 --- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp +++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp @@ -152,9 +152,6 @@ class IndVarSimplify { void sinkUnusedInvariants(Loop *L); - Value *expandSCEVIfNeeded(SCEVExpander &Rewriter, const SCEV *S, Loop *L, - Instruction *InsertPt, Type *Ty); - public: IndVarSimplify(LoopInfo *LI, ScalarEvolution *SE, DominatorTree *DT, const DataLayout &DL, TargetLibraryInfo *TLI, @@ -521,19 +518,6 @@ struct RewritePhi { } // end anonymous namespace -Value *IndVarSimplify::expandSCEVIfNeeded(SCEVExpander &Rewriter, const SCEV *S, - Loop *L, Instruction *InsertPt, - Type *ResultTy) { - // Before expanding S into an expensive LLVM expression, see if we can use an - // already existing value as the expansion for S. - if (Value *ExistingValue = Rewriter.getExactExistingExpansion(S, InsertPt, L)) - if (ExistingValue->getType() == ResultTy) - return ExistingValue; - - // We didn't find anything, fall back to using SCEVExpander. - return Rewriter.expandCodeFor(S, ResultTy, InsertPt); -} - //===----------------------------------------------------------------------===// // rewriteLoopExitValues - Optimize IV users outside the loop. // As a side effect, reduces the amount of IV processing within the loop. @@ -650,8 +634,7 @@ void IndVarSimplify::rewriteLoopExitValues(Loop *L, SCEVExpander &Rewriter) { } bool HighCost = Rewriter.isHighCostExpansion(ExitValue, L, Inst); - Value *ExitVal = - expandSCEVIfNeeded(Rewriter, ExitValue, L, Inst, PN->getType()); + Value *ExitVal = Rewriter.expandCodeFor(ExitValue, PN->getType(), Inst); LLVM_DEBUG(dbgs() << "INDVARS: RLEV: AfterLoopVal = " << *ExitVal << '\n' |
